Self-feeding paint-brush.



J. ALLAN.

Patented Jam27, 1914.

2 SHBBTSSHEET 1.

J. ALLAN.

SELF FEEDING PAINT BRUSH.

APPLICATION IILBD JAN. 27, 1909 Patented Jan. 27, 1914.

2 SHEETS-SHEET 2.

JAMES ALLAN, 0F GLASGOW, SCOTLAND.

SELF-FEEDING PAINT-BRUSH.

Specification of Letters Patent,

Application filed January 27, 1909: Serial No. 474,575.

To all whom it may concern:

Be it known that I, JAMEs ALLAN, a citizen of the United Kingdom of Great Britain and Ireland, and resident of 159Paisley road west, Glasgow, Scotland, painter, have invented certain new and useful Improvements in and Relating to Self-Feeding Paint-Brushes, of which the following is a -,interior of the cavity 12 is governed or con- ;trolled by the ordinary rotatable one way 'valves a d placed in the channels a and ;d-preferably in the position shown. the arrangement shown'it will be observed that the air from the pipe (1 does not really specification. 7

This invention relates to improvements in and relating to self feeding paint brushes and has for its object to more efiectuall'y efiect the distribution of the paint on the article to be painted and also to prevent any loss of paint and to obtain a better and more uniform surface thereof.

IVith my improved brush, a great saving of time is effected, thereby greatly reducing the cost.

Figure 1 shows a general view of the brush,'tank and connections. Fig. 2 a view of the lower portion of the tank at right i 'set forth, the paint becomes thoroughly atomizedthe particles having no tendency lto unite until sprayed on to the work.

angles to the tank shown in Fig. 1. Fig. 3 an enlarged sectional elevation of the brush. Fig. 4 an enlarged sectional elevation of the top part of Fig. 3, viz. the stock nozzle b is surrounded bya suitable set of bristles 1 which are secured to the outer face of the socket or sleeve 0. These bristles exand showing the manner of attaching the bristles to the top of the stock. Figs. 5 and 6 are modifications, hereinafter referred to.

The paint to be used is placed in the tank A which paint is discharged into the supply pipe B communicating with the brush C at any suitable pressure. Also communicating with the brush C and the top of the tank,

A is the air supply pipe-l the air and paint from the said tank passing up separate channels in the stock of the brush C and meeting near the outlet of the nozzle 0 of the brush, as hereinafter more particularly described. I

The .brush consists of a metal or other stock having preferably two channels a and d; the paint supply pipe B and: air" supply pipe D communicating with the channels a and d, respectively. The said channels preferably lead from the bottom end. of the stock of the brush C, to the tube 6 which may be secured or formed in the top end of the stock of the brush. In the case of the air supply channel d, I prefer that it be conducted upwardly into the tube 6, and I may efiect this by means; of the small pipe (1 screwed into the channel (2 of the air supply The open end of the pipe 6 is provided with a cap 6 which has a painof. outlet ducts or ports 6 permitting the issuance of liquid or .fiuid from the pipe I) to the atmosphere.

The openings of these ports on the interior face of the cap 6 are spaced apart, while the intermediate portions thereof tend to converge so that the opening on the outer face of the cap 6 is common to both ports.

Th paint supply and air supply to the come into contact with the paint supply from the pipe a until the paint is near the top of the cavity 12 then however it impinges on the paint and splits it up or atomz-lzes it; the paint passing out of the holes b of the cap I) in the form of very finespraya1'ong with the air from the pipe d.

By so splitting up the paint in the manner In my preferred construction the cap or tend beyond the nozzle 6 and form a pathway, as it were, for the stream of' liquid issuing from the said nozzle. 1

Referring to Fig. 3 there are shown bristles 1 extending upward and beyond the cap If; these bristles entirely surround the said cap, forming an ellipse in plan view.

Fig. 4 discloses the series of bristles n side elevation, the free edges thereof this instance being serrated as at 2.

As is well known in the applicationof paint by, or under pressure, it ispractlcally impossible to so regulate the flow thereof that just the exact amount of paint desired will be forced from the nozzle; Whenever the flow of paintis too great, the surplus there of formswhat may be termed runners,

which if not taken up in some manner, will result in the work belng streaked. To obviate this difficulty, I have; as above stated provided anabsorbent member CODSlStlIlg Of bristles or hair, which is secured to and extends beyond the end of the nozzle. It must be understood that the bristles do not enter into or obstruct the path of the liquid which issues from the nozzle, but'that they simply PatentedJan. 2'7, 1914.

surround the end of the nozzle, and form, as

it were, an extended passageway for the end of the socket c and thencc'into the top ends of the stock.

The bristles or hair of'the brush may be arranged perpendicularly or be angled to or from the center of the cap or nozzle b but I prefer that they be angled outward as shown in Fig. 3. y g

In the brush portion of the general view Fig. 1 I have shown the valves a d with their actuating handles a d in what I consider the'best position for controlling the paint and air supply when using the brush,

but they may be otherwise arranged. I

In some. cases I may deem it advisable to crank or angle thejstock of the brush, as shown inFig; 5. I may also employ in lieu of the cap 6 the cap' I), Fig. 6 which-screws onthe outside of the pipe I) and which cap b may have its underside cone-shaped as shown.

In the sectional elevation of the brush 7 Fig. 3 it. willbe observedthat a brush or wire for cleaning purposes may be passed right througli the paint supply channel a and that by removing the small set screw (1 at the bottom of the air channel (1, similarly a. cleaner may be passed right through it and the pipe at. I As is obvious the parts such as b and b .may readily be dismantled and" cleaned.

The tank A for holding the supply of paint may be of an ordinary nature that is to say itmay have the double bend pipe arrangement shown; one pipe communicating with the air supply pipe (2 and the other pipe communicating with apressure pump (hand or otherwise) for filling the tank A 'ii il l to k a" 1 e air sup y pipe tan an air supp y pipe to the piped may each be provided with shut off valves such as E and F as also may the paint supply pipe be provided with the valve G Fig. j

' The tank is preferably provided with a filler such as H. which may have a check valve, to allow the paint to run into the tank but to prevent the escape ofai'r from it. Also the tank may have an indicatorjsuch as J for indicating the amount of air pres sure' in the tank.

' The tank A'is preferably half filled with paint and the bottom is preferably made as shown in @Fig. 2.

Although I have referred toa tank such as A, any convenient form of tank in which an'air pressure is exerted may be employed.

I have also referred herein to the brush using paint, but it may equallywell be used for white or'color washes and patent washer 'such' as Halls distemper, 'Durisco and the like.

The brush may insome casesbe used as a sprayer that is to say without the bristles or hair and when in this; form it'may be used for other purposes such as spraying disinfectant or it may be used with water for Washing carriages andsuch like:

I have shown only one paint brush being fed from the tank A, but a similar tank may be employed to feed any. number of brushes.

Claims: 1. In self feeding paint brushes, a paint spraying nozzle having converging outlets opening into a common chamber and having separate air and fluid. supply pipes, in com bination with bristles'or'hairs surrounding into a common chamber, a pair of converging outlets from said nozzle, and having bristles or hairs surrounding said nozzle adapted to absorb any surplus liquid sprayed out by said nozzle, substantially as described.

3. In 'self feeding paint brushes, the combination with a spraying nozzle, of a ring,

a series of bristles or hairs secured thereto and extending beyond the-free end of said nozzle, said ring being detachably secured to said nozzle, substantially as described.

4. A painting apparatus comprising a paint spraying nozzle adapted to direct paint against a.s urface to be painted and a paint absorbing material surrounding and extending beyond the spray, permitting free passage of the paint in-the direction of the discharge of the spray but restricting lateral expansion of the paint issuing from the spraynozzle.

I A JAMES ALLAN.

Witnesses: I

" JosnrH WILLIAM THoMrsoN, JOHNSTON HARVEY. 

